code: def test_pickle_named_sharding(self):
      s = jax.sharding.NamedSharding(
          mesh=jax.sharding.Mesh(np.array(jax.devices()), "d"),
          spec=jax.sharding.PartitionSpec("d"),
      )
      self.assertEqual(s, pickle.loads(pickle.dumps(s)))
  
imports: import pickle
  import unittest
  from absl.testing import absltest
  from absl.testing import parameterized
  import jax
  from jax import numpy
  from jax import config
  from jax.interpreters import pxla
  from jax._src import test_util
  from jax._src.lib import xla_client
  import numpy
label_desc: Use image node_id 12 for calling the PickleTest obj's underlying member method code with example usage: obj.test_pickle_named_sharding() without return types